//  Copyright © 2009-2021 John Sheehan, Andrew Young, Alexey Zimarev and RestSharp community
// 
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// 
// http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// 

namespace RestSharp; 

class RequestHeaders {
    public ParametersCollection Parameters { get; } = new();

    public RequestHeaders AddHeaders(ParametersCollection parameters) {
        Parameters.AddParameters(parameters.GetParameters<HeaderParameter>());
        return this;
    }

    // Add Accept header based on registered deserializers if none has been set by the caller.
    public RequestHeaders AddAcceptHeader(string[] acceptedContentTypes) {
        if (Parameters.TryFind(KnownHeaders.Accept) == null) {
            var accepts = string.Join(", ", acceptedContentTypes);
            Parameters.AddParameter(new HeaderParameter(KnownHeaders.Accept, accepts));
        }

        return this;
    }
}